Thrush washers

Chrisj796

Member
Started to reassemble case today, seem to of had a thrush washer vanish. I am not 100% if it was there or not on disassembly, but I have seen a few post similar to my situation. I have one 14mm thrush washer for transmission. I set everything on bench an cannot find the 13.5mm at the end of counter shaft.
I looked on CHP an they are sold out which would be a good indication they might be a typo on diagrams.
Bike is a 1970 K0 3 speed
 

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kirrbby

Well-Known Member
Yes. 3speed CTs and Zs have 2 thrust washers...2 different sizes. The 4speeds only have the one...13.5mm They're NLA on the 6volt bike parts lists. But they're still available if you buy the 12v part # Slightly different...O.D. I think. But work just fine.
They are notorious for sticking to the inside of the case when you split your engine, then get overlooked, and lost.
 

Chrisj796

Member
Yes. 3speed CTs and Zs have 2 thrust washers...2 different sizes. The 4speeds only have the one...13.5mm They're NLA on the 6volt bike parts lists. But they're still available if you buy the 12v part # Slightly different...O.D. I think. But work just fine.
They are notorious for sticking to the inside of the case when you split your engine, then get overlooked, and lost.
Ok thanks so I need 1-14mm & 1-13.5mm?
 

Chrisj796

Member
Yes. 3speed CTs and Zs have 2 thrust washers...2 different sizes. The 4speeds only have the one...13.5mm They're NLA on the 6volt bike parts lists. But they're still available if you buy the 12v part # Slightly different...O.D. I think. But work just fine.
They are notorious for sticking to the inside of the case when you split your engine, then get overlooked, and lost.
Great call!!!!! Was sitting outside in the bottom of a bucket of mineral spirits I soaked the case in. Thanks you, that just saved me from having to wait on another one.
 

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